Windmill



2 Sheets-Sheet 1.

(No Model.) I

A. WALLACE.

WINDMILL.

No. 478,982. Patented May 3, 1892.

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No. 473,982. Patented May 3, 1892.

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AMOS VALLAOE, OF LITTLE ROCK, IOYVA.

WINDMILL.

SPECIFICATION forming part of Letters Patent No. 473,982, dated May 3,1892.

Application filed October 31, 1891- Serial No. 410,436. (No model.)

To all whom it may concern:

Be it known that I, AMOS \VALLACE, a citizen of the United States,residing at Little Rock, in the county of Lyon and State of Iowa, haveinvented certain new and useful Improvements in Vindmills; and I dohereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the annexed drawings,making a part of this specification, and to the letters of referencemarked thereon.

This invention relates to certain new and useful improvements inwindmills, and is designed more especially as an improvement upon thepatent granted me November 25, 1890, No. 441,519.

It has for its objects, among others, to improve generally upon theconstruction therein shown, to provide improved clutch mechanism, toprovide novel means for throwing the wheel into and out of the wind, andto simplify and cheapen the construction and render the device moreefficient in operation.

Other objects and advantages of the invention will hereinafter appear,and the novel features thereof will be specifically defined by theappended claims.

The invention is clearly illustrated in the accompanying drawings,which, with the letters of reference marked thereon, form a part of thisspecification, and in which Figure 1 is a side elevation of sufficientof a windmill to illustrate my invention. Fig. 2 is a top plan thereof.Fig. 3 is an enlarged section through the main operatingshaft, lookingfrom the inside outward. Fig. 4 is a detail of a portion of the clutch.

Like letters of reference indicate like parts throughout the severalviews in which they occur.

Referring now to the details of the drawings by letter, A designates aportion of the tower, which may be of the usual construction. Upon it issupported the casting A, from which depends the tube A through which thepump-rod passes in the usual manner.

B is a casting, which forms a support for the main operating-shaft andis provided with a lateral portion 1), forming a guide for the upper endof the pump-rod, as seen in Fig. 1. The pump-rod G is given theup-and-down movements by means of the cam-disk C on the mainoperating-shaft, the said disk being provided with a wrist-pin c, towhich is connected the pitman G which is suitably connected with the pinor lateral extension 0' on the upper end of the pump-rod, as seen inFig. 1, all so arranged that the revolution of the main shaft and wheelcauses the pumprod to reciprocate vertically in the usual manner.

D is the main shaft. It is journaled in suitable bearings in the castingB and has sleeved thereon near its outer end the wheel D, which isgrooved upon its periphery, as seen in Figs. 1 and 2. This wheel hasrigid thereon an arm D to which is fixedly secured the inner blade E,which may be of any well-known or preferred form of construction. Theother blades E are loosely sleeved upon the main shaft,

but are all connected together and to the inner blade E by means of achain or cord F.

in a manner similar to the blades of the wheel,

in the patent above referred to, so that when the wheel turns all theblades turn with it. This wheel is preferably constructed in two piecesconnected together in any suitable manner, as seen in Figs. 2 and 3, andupon its inner face it is provided with ratchet-teeth cl, as shown inFigs. 1, 2, and 4, and upon the periphery of the hub or boss d withteeth, with which is designed to engage a pawl, hereinafter described.These teeth are best seen in Fig. 3, where they are lettered 6 Fast uponthe main shaft is the clutch-wheel F, so arranged as to revolvetherewith, but capable of longitudinal movement upon the shaft. This maybe accomplished in any suitable manner. It is provided with clutch-teethf to engage the teeth (1 when the wheel is moved in that direction, sothat the wheel D will revolve with the shaft; but when the clutch-wheelis disengaged the wheel D will not revolve with the shaft. A spring Faround the shaft serves to normally keep the clutch members inengagement with each other.

The clutch-wheel has a groove f into which is fitted the forked end ofthe lever G, which is pivoted at g to an arm or bracket G on the castingB, as seen best in Fig. 2, with its free end arranged in the path of thetail-vane H,

which is carried by the arm H, pivoted at h to the casting A and havinga short arm 11 extending beyond its pivot, as seen in Fig. 2, and towhich is pivotally connected the arm or rod H which passes through aguide h, and between this guide and a washer or other suitable provisionIt on the end of the arm or rod H is confined around the arm or rod aspring H, as seen in Figs. 1 and 2, the spring being regulated by a nuth on the end of the rod or arm, as shown. The vane may be suitablybraced, as by the brace-arm h.

J is a chain or cord attached at one end to' the arm of the tail-Vane,thence passes over a pulley j on the side vane K, and then down throughthe guide-tube A J is another chain or cord having one end attached tothe wheel D, as seen in Fig. 1, and thence passes over a pulley j,carried by the overhanging arm J and thence downward over a pulley andthrough the guide-tube, as seen best in Fig. 1. On the inner face of thewheel D is a lug D upon which is designed to ride the free end of thespring-arm L, the other end of which is attached to the arm J as seen inFigs. 1 and 2.

M is a dog or pawl adapted to engage the ratchet-teeth e of the wheel D,as seen in Fig. 3. Itis normally kept outof engagement with theratchetby the spring Z, acting upon its tail end, as shown bestin Fig. 3. It isheld in engagement by the arm L, which is hinged to the lug Z onthe'inner face of the wheelD, as shown in Fig. 3, which is curveddownward, as seen in Fig. 1, and is operated by the movement of theclutch-Wheel F when the latter is moved.

The operation will be readily understood from the foregoing descriptionwhen taken in connection with the annexed drawings, and a detaileddescription thereof is not deemed necessary. With the clutch membersengaged the Wheel revolves with the shaft and the pump-rod isreciprocated up and down. If the power of the wind increases, the chainor rope J draws the vanes together and the tail-Vane H strikes thelateral arm G, which separates the clutch members and opens the arm thatholds the dog in engagement with the ratchetwheel, and thus the chain J2 is wound upon the wheel D and the sails roll down to a closedposition.

The parts are simple, durable, easily assembled or separated for thepurpose of repairs, and in practice the device has proved most efficientfor the purposes for which it is intended.

What I claim as new is 1. The combination, with the folding wheel andits hub, of the clutch for engaging therewith, the lever for operatingthe clutch, the ratchet and pawl actuated through the movement of theclutch, and the hinged arm on the wheel engaging the pawl, as set forth.

2. The combination, with the folding wheel and its hub, of the clutchfor engaging therewith, the lever for operating the clutch, theratchet-wheel, the wheel on the main shaft, the cord connectedtherewith, the hinged downwardly-curved arm L on the Wheel on the shaft,and the spring-pawl acting on the ratchet, as set forth.

3. The combination, with the folding Wheel and its hub, of the clutchengaging therewith,

tail-vane, the side vane, the cord-supporting pulley on the shank of theside vane, a cord passed t-hereover for operating the main vane, the lugon the loose member of the clutch, and

the spring-arm acting on said lug, as setforth.

5. The combination, with the fast and loose members of the clutch, ofthe lug on the loose .member, the arm J and the spring-arm attached toone end of the arm J and acting on the said lug, substantially as andfor the purpose specified.

In testimony thatI claim the above I have hereunto subscribed my name inthe presence of two witnesses.

AMOS WALLACE. Witnesses:

W. H. GREEN, E. T. SMITH.

